Opus 5: Tops Fable 5 at Half the Price

Opus 5 joins the AI model fight, delivering stronger results than Fable 5 at half the cost and earning instant Fable 6 labels from testers. GPT-5.6 had little time at number one before Kimi K3 with open weights charged into the global top three. Large language model updates accelerate AI industry impact while teams run fresh AI model performance comparison tests daily.